How do you tighten the bolts. The bolts have to go through the nose cone holes? I prefer hex hd bolts.

Thank you for your inquiry, well it all depends on what type of water pump pulley your running cause if its steel this will not work for you it must be aluminum pulley for this to work

Whats the length of these,they look half inch to me?

The size and length of the bolts are standard OEM, fits perfect

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CHEVY SMALL BLOCK WATER PUMP PULLEY NOSE BOLT KIT

Product ID: 596083358

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Details

Brand
CFR
Material
Aluminum Alloy
Vehicle Service Type
Car
Manufacturer
CFR
UPC
704831094572

🔩Precision 5/16"-24 x 3/4" bolts

🛠️Durable alloy steel construction

🇺🇸Proudly USA made

Description

🔧 Upgrade your Chevy Small Block with bolts that mean business!

MADE IN THE USA - Quality and reliability you can trust
COMPLETE 4 PIECE KIT - Everything you need for a flawless pulley upgrade
FLAT HEAD CAP SCREWS - Sleek design for seamless aluminum pulley installation
PREMIUM ALLOY STEEL BOLTS - Built to withstand high stress and heat
ENGINEERED FOR CHEVY SMALL BLOCK - Perfect fit for 265-400 series engines

This CFR Performance bolt kit includes four precision 5/16"-24 x 3/4" flat head cap screws made from durable alloy steel, designed specifically for Chevy Small Block engines (265-400 series). Ideal for replacing fan and stock pulley bolts when installing aluminum pulley noses, these USA-made bolts ensure a secure, high-performance fit.

Specifications

Manufacturer	CFR Performance
Brand	CFR Performance
Product Dimensions	16.1 x 10.3 x 0.2 cm; 51 g
Item model number	HZ-7756
Manufacturer Part Number	HZ-7756
Volume	1 Cubic Inches
Material	Aluminum Alloy Steel
Manufacturer	CFR Performance
Country of Origin	USA
Item Weight	51 g

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17.42 OMR

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